If you limit yourself to reading just
the ebooks available for free on the internet, as I have been doing
lately, you wind up inhabiting the world prior to 1923. American
copyright laws are complicated, but books published before that
magical year, 90 years prior to this one, are in the public domain. It's about as close to time travel as you can reasonably get.

To really immerse yourself in the era, you
can read the travelogues of Sir Frank Fox, a kind of early-twentieth
century Bill Bryson. An Australian journalist who spent much of his
life reporting for newspapers in London, he wrote books about the
natural history, geography, and ethnography of various lands, and
there are five of them—on Australia, Bulgaria, England, the Balkan
Peninsula, and Switzerland—available at Project Gutenberg for free.
For this review, I read Switzerland,
published in 1914.

As a rule, one of the risks of
inhabiting this pre-1923 world is drowning in a sea of unnecessary
words. Today the fashion is to write with extreme clarity,
projecting each scene into the reader's mind as if he or she were
watching a movie, and to snip out all excess verbiage. Not a hundred
years ago—reading Fox is a bit like codebreaking, with sentences
that sometimes encompass eleven or twelve clauses and words that
aren't used much anymore, like “waggish” and “beneficient.”
His very first chapter includes a hilariously lengthy Socratic
dialogue rebutting the idea that mountain people are more virtuous
and vigorous than lowlanders, owing to some magical quality of the
mountain air—not the introduction that a modern writer would use,
but curiously charming nevertheless, once you adjust your ear to his
style.

It's worth noting, too, that this
pre-1923 world as represented by its literature is a pretty
Anglocentric one. Fox's readers were British subjects, or former
British subjects, so perhaps it's no surprise that he is eager to
caricature “the Swiss race” and make his own sweeping
generalizations about why they are the way they are, while
simultaneously tearing down other sentimental depictions. And the
chapter on Swiss prehistory is threaded with regular assertions that
human society is on an ever-upward trend, with pathetic (yet noble)
nomads at the bottom and the 1914 European at the crest.

But it's an interesting experience,
revisiting the literary fashions and the inherited wisdom of a time
not so long ago. To the modern reader interested in geography and
ethnography, and not afraid to put on a monocle and go along for the
ride, Switzerland is
fun reading. The prehistory chapter includes a great summary of what
was known about the villages-on-stilts that fringed many Swiss lakes
in Celtic times. The chapter on local writers includes an anecdote
about the time Byron, visiting the fashionable salons along Lake
Geneva, attempted to scandalize polite society as he had in Britain,
and failed. Apparently the Swiss found him tedious. And the chapter
on the Alps, along with a compact treatise on the formation and decay
of mountains, includes this note:

“M.
Charles Rabot [a geographer and mountaineer] asserts that the
glaciers in Argentina are also retreating, and surmises, from data
perhaps not so well established, that there has been a general
retreat of glaciers during the last half of the nineteenth century
throughout Spitzenbergen, Iceland, Cetnral Asia, and Alaska. He
suggests that the cause is a present tendency towards equalisation
of the earth's temperature. Others more boldly affirm that the Swiss
glaciers, as well as other great ice masses existing on the globe,
are remnants of the last Ice Age, and are all doomed to disappear as
the cycle works round for the full heat of the next Warm Age. But the
disappearance, if it is to come, will not come quickly, and the doom
of ice-climbing in Switzerland is too remote a threat to disturb the
Alpinist.”

That passage falls with quite a
different meaning on our ears today, and one of the great pleasures
of reading Fox is looking for these harmonies and dissonances, the
moments that reveal how much has stayed the same and how much has
changed. If that sounds like fun to you, then there's a cache of free
ebooks waiting for you on Fox's Gutenberg author page.

Happy time-traveling.

Veronique
Greenwood is a former staff writer at DISCOVER Magazine. She writes
about everything from caffeine
chemistry to cold
cures to Jelly
Belly flavors, and her work has appeared in Scientific American,
TIME.com, TheAtlantic.com, and others. Follow her on Twitter
here.

04/09/2013

"The Ghost in the Cell," by Scott C. Johnson. Published by Matter. Available via Web, ePub, Kindle. $.99.

Reviewed by Annalee Newitz

It's a prize that scientists have sought since the early nineteenth century: a biological marker that predicts violent behavior in humans. In the 1830s, phrenologists believed head bumps could reveal a criminal personality -- often, prostitutes and the poor were said to have bumps that marked them as deviants from birth. But today, it seems this pursuit may have moved beyond the realm of pseudoscience.

Thanks to recent discoveries, we have evidence that the genes of abused children are marked by the experience. Over time, these effects leave them prone to depression and make it harder for them to control their violent impulses. Could we be on the cusp of discovering a scientific approach to a social problem? In an essay for Matter magazine, former war correspondent Scott C. Johnson suggests that we are. Unfortunately, Johnson fails spectacularly to explain the complexity of this problem, and winds up telling a story that distorts both the science and the reality of abuse in many people's lives.

12/26/2012

When I'm 164, by David Ewing Duncan, Published by TED Books (Available for Kindle, iPad, Nook)

Reviewed by Annalee Newitz

Half cultural prognostication and half science journalism, David Ewing Duncan's TED Books longread When I'm 64 explores whether medicine will one day make it possible for us to live forever -- and what would happen to human society if we did. It's a hotly debated topic, and Duncan takes his time tackling every aspect of it in this lengthy essay. Engaging and often fun, the book takes us from the labs where scientists are exploring the genes that control aging, to brain-computer interface demonstrations where paralyzed people are learning to control artificial limbs with their minds. Whether we do it with biology or machines, it's likely that humans will artificially enhance our longevity at some point. Though the prospect of doubling our life expectancy seems crazy to some, Duncan argues it's not entirely implausible. Especially given how far we've come over the past century.

Still, ethical questions plague the project. While researching his book, Duncan ran a survey online and in his lectures where he asked people if they would like to live beyond the standard 80 years. Most said no, though a significant minority said they wouldn't mind living to be 120 or 164. Those yearning to be immortal represented less than one percent of respondents. Many people felt that living longer than 80 years would mean depleting the Earth's resources even more quickly than we already are. Others worried that young people would have no chance at getting good jobs, since their elders could keep working for decades longer. Some simply felt that living for a long time would be depressing and boring.

Several sections of the book are devoted to Duncan's quest to understand how it would change humanity if we could live much longer than we do now. From the rational world of tissue engineering labs where researchers hope to use 3D printers to make healthy, new organs, he ventures into Singularity University where would-be immortals from Silicon Valley listen eagerly to longevity advocate Aubrey De Gray's prediction that the first person who will live to be 1,000 has already been born. These true believers imagine that science will solve our energy problems and economic difficulties long before overpopulation due to immortality becomes a planet-destroying problem.

As if acknowledging the mostly unscientific nature of the longevity project, Duncan explores its implications by discussing mythology and science fiction about immortality. We may not know what role telomeres play in aging, but we certainly know that The Matrix and Terminator warn against using technology to enhance humans. Given the speculative nature of his topic, Duncan's forays into fiction make a lot of sense, and help provide a cultural frame for debates over longevity enhancement.

Here on Download the Universe, we often discuss how a particular e-book makes use of the medium, whether with enhanced images, video, or even just a good set of links out to more sources. But with When I'm 164, I'd like to talk about a stylistic quirk of e-books that has nothing to do with format: the fact that it's become standard practice for online writing to include a lot of first-person, confessional storytelling.

Should online writing always be personal? Certainly it's refreshing that online writers try to avoid some of the print media's fake objectivity. But should that always mean authors need to personalize their subjects?

Like a lot of longreads online, Duncan's book veers into the personal. He delves into his sadness at his parents' impending deaths, interviews both them and one of his sons about their views on life extension, and ultimately concludes the book by declaring that he's emotionally torn by the idea of living forever. In some ways, the climax of the book is Duncan's final declaration of ambivalence about scientifically enhanced longevity. I think this personal touch works in some ways -- it helps to draw the reader in, and acknowledges the highly personal responses that many people have to this area of research.

But it often reads as cheesy and unnecessary, as if Duncan were just going through the motions of making his online writing more personal than print. Of course it's easy to sympathize with his sadness at a parent's decline, but there is nothing particularly insightful or unusual to Duncan's first-person stories about these issues. He paints the scientists and thinkers he's consulted for this book in far more interesting detail than he paints himself. The first person bits just weren't necessary to make this story compelling.

Duncan is at his best when coaxing out intriguing speculations from scientists, engineers and philosophers about their views on life extension. Duncan's observations of their work form the meat of this extremely gripping tale about one possible future -- of enhanced longevity -- that could arise from contemporary medical science.

Yesterday the Washington Post announced that they were hiring a new editor-in-chief. Reporting for the New York Times, Christine Haughney wrote that the Post made the switch because they were struggling with a steep decline in readership. It's not until deep in the piece that Haughney makes a startling statement:

"The paper also faces fresh competition from online news outlets, like Politico, whose founders include former Washington Post reporters."

Politico certainly didn't bring the Washington Post to its current moment of crisis singlehandedly. But it is striking to me that a web operation started from scratch in 2007 could baloon so fast that it could become a major threat to what was once one of the world's leading newspapers.

My attention was drawn to this buried lead because I've recently been getting to know a new player in the science news business, called Matter. This morning they are launching their web site, and their first piece of long-form journalism. It's way too early to predict whether Matter will become the Politico of the science world. But they definitely are entering the arena with impressive style.

In January 1665, Samuel Pepys wrote in his diary that he stayed up till two in the morning reading a best-selling page-turner, a work that he called "the most ingenious book I read in my life." It was not a rousing history of English battles or a proto-bodice ripper. It was filled with images: of fleas, of bark, of the edges of razors.

The book was called Micrographia. It provided the reading public with its first look at the world beyond the naked eye. Its author, Robert Hooke, belonged to a brilliant circle of natural philosophers who--among many other things--were the first in England to make serious use of microscopes as scientific instruments. They were great believers in looking at the natural world for themselves rather than relying on what ancient Greek scholars had claimed. Looking under a microscope at the thousands of facets on an insect's compound eye, they saw things at the nanoscale that Aristotle could not have dreamed of. A razor's edge became a mountain range. In the chambers of a piece of bark, Hooke saw the first evidence of cells.

07/01/2012

Be Not Content: A Subterranean Journal, by William J. Craddock. Originally published in 1970 by Doubleday. Reprinted in 2011 by Transreal Books. Available for Kindle and NOOK from publisher Rudy Rucker, $6, or in paperback from Amazon, $16.

Reviewed by Steve Silberman

A Place You'll Never See

In the late 1960s, my family lived in a middle-class housing development in New York City called Fresh Meadows. An attempt to build a suburban-style utopia in the middle of Queens for returning World War 2 veterans, it was a cheerful place to grow up, with lots of trees, playgrounds linked by winding paths, and a grassy slope behind our apartment complex that was perfect for sledding in the winter. It was on that hill, one day in 1968 or so, that I met a group of refugees from another brave attempt to construct utopia in the midst of an American city.

It was a strange time to be a kid. Every night the sober, gray-faced men on TV issued dispatches from the ongoing apocalypse: liquid fire raining from the sky onto huts in Vietnam; mobs of police charging into crowds of college students, clubs flailing; flags torched, ghettos ablaze, and an actual pig running for President. Meanwhile, when my mother and father took me and my sister to Central Park on Sundays, Bethesda fountain was filled with longhaired men and women splashing around naked. I decided that when I grew up, I wanted to be like them. I turned my room into a little shrine of freakdom lit by candles weeping rainbow tears down the straw sides of chianti bottles.

In that context where anything at all might happen, it didn't seem unusual to walk behind our building on 69th Avenue one day and find a group of older kids lying on a blanket, limbs intertwined, gazing up at the clouds and giggling occasionally between lengthy intervals of silence. Always curious, I walked right up and started asking questions. They were very friendly, and invited me to join them in playful activities like cutting leaves out of paper and hanging them in the trees. Every now and then, one of them would utter a cryptic remark along the lines of, "Should we drop another tab of blue or wait?" Even at age nine, I was savvy enough to realize that they were talking about something illegal, probably drugs. It didn't matter. The sly elves that had mysteriously appeared in my backyard were obviously harmless, and I wasn't surprised when I walked out the next morning and found them still camping out beside the basketball court.

After another day of soaking up the ambience of their psychedelic idyll, I invited them upstairs to meet my parents. This wasn't as foolish as it appears: my parents were anti-war radicals, albeit of the academic, buttoned-down, cigarette-smoking, Marx-and-Engels-quoting, Mao's little-red-book-reading, New Leftist type; but I hoped everyone might see eye-to-eye on the coming revolution. I don't remember how my parents reacted to my new pals from the backyard, but all seemed to go well. And I'll never forget what one young woman in the group said to me, right before they were sucked back into the space-time continuum, when I asked them where they came from: "We're from a place you'll never see -- the Haight-Ashbury."

O the patchouli-scented portents, O the irony! Because, dear reader, I have now been a resident of the Haight-Ashbury neighborhood in San Francisco for 33 years -- a fact I definitely attribute to my chance meeting in Fresh Meadows with those echt hippies. But in truth, the nice lady in the purple paisley schmatte was right on. As it has been since I moved here, Haight Street is a tie-dyed dump, a dreadlocked tourist trap lined with sleazy smoke shops and prep-school refuseniks on the road to rehab under macabre murals of Janis Joplin and Jimi Hendrix -- hardly the shining New Jerusalem that the first-generation hippies hoped to build here in the belly of the beast.

As it turns out, even seeing the Haight-Ashbury of that era through the borrowed eyes of eyewitnesses and historians has been difficult. The Paradise Now! aesthetic of the lysergic lotus-eaters didn't lend itself to careful chronicling and recollections in sober tranquility, as anyone who has tried to sit through the cosmically tedious home movies of the Merry Pranksters sloshing in the mud can attest. Ironically, a book that was thought to be insufferably square by anyone who appeared in its pages -- Tom Wolfe's The Electric Kool-Aid Acid Test, published in 1968 -- has stood virtually unchallenged as the most vivid literary representation of the era, with its hurtling descriptions of the young Grateful Dead in full fury at Ken Kesey's multimedia clusterfucks, shining in the chaotic din "like a light-bulb in a womb."

Few certifiably clued-in alumni of that scene, it seems, were left with enough cognitive fortitude to compile the definitive tale of the tribe. Charles Perry's The Haight-Ashbury: A History is a dutifully researched, workmanlike account of events, but it lacks the bravado and flash that gave the era its lasting mythological dimension. Before ODing on a New York subway, Emmett Grogan, the swashbuckling founder of the Diggers -- the prototypical commune that kept the pilgrim hordes fed with dumpster-dive cuisine until the Mafia, speed, and busloads of free-love rubberneckers trampled down flower power for good -- wrote a memoir of the Haight called Ringolevio that had an appealing hip swagger, but never quite rose to the level of great art, as Allen Ginsberg's "Howl" and Jack Kerouac's On the Road had done for the previous Beat generation of seekers.

Now, however, another title has been added to the very short list of engaging books about the golden age of neuro-hacking, when a bunch of scruffy street kids laid claim to the most potent "mind-manifesting" molecules in history, and used them to storm the synaptic gates of Heaven. First published in 1970 and long out of print, moldering on a few select dusty bookshelves beside copies of A Separate Reality, Das Energi, and The Whole Earth Catalog, William Craddock's Be Not Content is now back as an ebook and limited-edition paperback, snatched out of the memory hole by Rudy Rucker, the computer scientist and mathematician who helped launch the cyberpunk genre of fiction with his Ware tetralogy and "transrealist" novels like White Light.

Ballsy, redemptively honest, astonishingly inventive, flawed, and ultimately heartbreaking, Be Not Content made a significant impact on the handful of freaks who read it, including Rucker himself, who writes on his website, "I quickly began to idolize Craddock. I had my own memories of the psychedelic revolution, and when reading Be Not Content I felt -- Yes. This is the way it was. This guy got it right." Rucker's act of digital resurrection also represents another appealing potential for the ebook format: the revival of obscure, obsolete titles by readers obsessed enough to secure the reprint rights.

05/24/2012

The Chemical History of a Candle, by Michael Faraday, (Griffin, Bohn And Co., London, 1861), available free from Project Gutenberg in multiple e-reader formats and also from LibriVox as a free audiobook.

reviewed by Deborah Blum

"There is no better, there is no more open door by which you can enter into the study of natural philosophy than by considering the physical phenomena of a candle."

It was the above line that first caught my attention. The recognition that we often best appreciate our extraordinary natural world by seeing it through the lens of the ordinary: crystalline structure as revealed by the stitchery of winter frost, the chemical dance of light and life found in the changing colors of leaves, the hot whisper of oxygen as it sends the flame higher.

That recognition has driven much of my own science writing – the idea that we can often illuminate science through tales of the everyday. I wish I could tell you that I'd thought of it first, that it was somehow primordially my own. But, at best, I think I can claim to be carrying on a time-honored tradition. Because it's very clear that the 19th century scientist Michael Faraday was doing that and doing it exceptionally well some 150 years ago.

Here at Download the Universe, we reviewers are mostly looking toward the future - what we hope is the promise of e-books, their potential to transform the reading experience. Possibly transcend it. But I want to take this opportunity to explore another aspect of the electronic publishing world, the ability to explore our past, the free archives offered by publishers like Project Gutenberg.

Founded in 1971 by the late Michael Hart, Project Gutenberg began as a labor of love, the painstaking transfer of books in the public domain - many of them once forgotten-- into digital life. The Gutenberg website now makes 39,000 free e-books available. It also links with digital partners to provide access to another 60,000 e-manuscripts. Like Faraday's candle--to stretch that analogy a little here - it offers an open door, a brightly lit access to the words, and even the wisdom, of our past. Like no other generation, we can explore this virtual library, stumble across old chemical histories of candles and learn to think differently about our own work.

And stumble is exactly what I did.

I see you are not tired of the candle yet, or I am sure you would not be interested in the subject in the way you are.

Not that it was much of a fall. More of a sidestep. I spend a lot of my time writing about and researching the history of science, for books like The Poisoner's Handbook, my recent story of poison, murder and the invention of forensics in the early 20th century. I do so because I believe--no, really, I know--that we cannot understand who we are unless we understand how we got here. And so I was doing some research into the history of chemistry and Faraday's book almost immediately appeared in my browser.

This, I think, is the other magic wrought by on-line publishers like Project Gutenberg. You can be happily rambling through the history of chemistry (a phrase, I know, that only a geek could write) and suddenly discover that a scientist born in the close of the 18th century (1790) understood perfectly the very principles of science communication that you'd been preaching in the 21st century.

Last fall, ABC launched a lazy, cynical reboot of the iconic 1970s TV series Charlie's Angels, hoping to cash in on the whole nostalgia trend. NPR's Linda Holmes wrote one of the most insightful reviews I've seen in a long time about just why the reboot was so much worse than the many other silly or trashy shows that mysteriously find their way onto primetime TV. To wit: nobody involved ever really loved the show, not even a little. This, Holmes writes, is what she hates most about TV:

"It's these dead, unloved, pre-chewed blobs that are spat out over and over again, truly serving no purpose other than filling time between commercials. Nobody thinks this show is fun, nobody thinks this show is interesting, nobody thinks this show is cool. Nobody thinks this show is anything. Nobody loves it, and you can tell."

I found myself reflecting on Holmes' observation while flipping through Titanic: Uncovering the Secrets of the World's Greatest Shipwreck, a National Geographic "short" released just in time for the 100th anniversary of the famous sinking, which claimed the lives of more than 1500 people. NatGeo isn't the only organization seeking to cash in on the RMS Titanic's historical landmark moment; there's a reason James Cameron released Titanic 3D this year, after all, and most news outlets have obliged with their own takes on the tragedy.

The story of Titanic has captured the public's imagination for a century and inspired countless books and films, so I get why a publisher would be interested in capitalizing on a "sure thing" in these tough economic times. And as a lifelong Titanic fan, I'm absolutely the target audience. Alas, I'd be hard pressed to find a more lackluster, uninspired, and disappointing excuse for a retrospective than this. Honestly? It feels like an afterthought. This is the e-book that nobody loved. And I paid $3.99 for the privilege.

Michael Sweeney's prose is clean and competent, if a bit workmanlike, and he does a decent job of bringing a few telling details and heartstring-tugging personal stories to the fore. He dutifully sums up the various theories about the sinking, and Robert Ballard's discovery of the wreckage on the ocean floor in 1986.

But this is well-traveled ground. We've heard most of these stories and met all these people before. There is very little here one couldn't find with a quick 15-minute Google search, or by leafing through one of the umpteen prior books about Titanic that are available.

That's not necessarily a problem -- especially for those sad souls on Twitter who have only just realized Titanic wasn't just a blockbuster movie -- but if you're going to rework old material and go the trouble of packaging it into an e-book, it's generally a good idea to find some new twist, a new way to shape the narrative, something to make it seem fresh. That freshness, alas, is sorely lacking here.

Still, that would have been less of an issue if the production values were a bit higher. There is so much good material in the way of old photographs and illustrations relating to Titanic, yet all we are given is the usual smattering of archival photographs, plunked perfunctorily at the end of each chapter. Not every e-book needs to be an expensive app with impressive bells and whistles, but a little more effort on that score would have added a bit of much-needed pizzazz to the presentation.

Cameron's blockbuster film has garnered its share of snark as well as praise over the years, but whether it's your cup of cinematic tea or not, you can tell Cameron loved that project. It's a reimagining of a timeless tale, not just a regurgitation of the same old stories. Cameron poured his heart and soul into it, obsessing over the smallest detail, and he's still at it, as evidenced by the new CGI animation below -- a dynamic model of the sinking sponsored, ironically, by National Geographic.

You just can't fake that kind of passion. And that's precisely what's missing from this e-book. Nobody seems to have cared enough to bring that extra spark of creativity to the project, perfectly content to just serve up a warmed-over rehashing of the events. In fact, it's possible that I expended more thought and time on this review than anyone spent on Titanic: Uncovering the Secrets of the World's Greatest Shipwreck. Titanic deserves better.

Jennifer Ouellette is the author of several popular science books, most recently The Calculus Diaries: How Math Can Help You Lose Weight, Win in Vegas, and Survive a Zombie Apocalypse. She also blogs at Cocktail Party Physics and Discovery News. Follow her on Twitter.

03/29/2012

In 2004, a Seattle-based researcher, Steven Gilbert, published a 280-page paperback titled A Small Dose of Toxicology. You might not guess from that modest title that the author was on a scientist on a crusade. But he was. He is.

"It's critical that we scientists be more engaged with the public," he says."We're talking about environmental issues that are having a bigger and bigger impact on our lives." He had big goals for the book too - he wanted it to contribute to public awareness, to encourage people to demand more of a government response, greater corporate responsbility. He wanted it to change things: "We have an ethical responsibility to our children."

Gilbert had a long-time background in the study of poisonous things. He received a PhD in toxicology from the University of Rochester in 1986. He was founder of the non-profit Institute of Neurotoxicology and Neurological Disorders in Seattle, an affiliate professor at the University of Washington. His particular area of study was in the area of low-dose exposures to toxic chemicals, an area that he was uneasily aware remained poorly understood.

And after some years, he just wasn't sure that the paperback was having the hoped for effect. Or that his publisher was particularly enthusiastic. So he decided to take it on as a DIY project. "I was originally disappointed. Then, I thought, well I could do this myself." First, he started a website, Toxipedia, which provides a free, searchable database of information on toxic chemicals. And then he started his own e-book publishing company, Healthy World Press, and published the second edition of A Small Dose of Toxicology himself.

The book is one of three now published by Healthy World and all follow the same model. They are offered as free downloads in either e-pub, Kindle, or pdf format from the Toxipedia website. There's a requested donation to Gilbert's non-profit but it's not required. "My first goal wasn't to make money," he said. "It was to have an impact."

I contacted Gilbert after discovering his e-book on the Toxipedia site. This was not, um, my first visit there in search of poisonous information. It's a natural consequence of writing a book about poisons and blogging on that same subject over the last few years. Really. Although sometimes I worry that the search history on my hard drive, riddled with visits to Toxipedia, the Agency for Toxic Substances and Disease Registry, and their ilk suggests the habits of a fairly iffy character.

But anyway - and more to the point, I recognized in Gilbert's work an awareness not unlike my own - that we exist in a chemical world, that we've yet to map that complicated terrain or fully understand its risks. And that as our adventures in chemistry - taking as a simple example, rising levels of carbon dioxide in the atmosphere - change our planet, there's an imperative need to do tell that story better.

Still I was curious.

One can admire the crusade and still wonder if it's actually accomplishing anything. I wondered whether Gilbert's decision to go to e-self publishing improved the paper product in any meaningful way. And it's with those questions in mind that I now want to address the book directly. For comparison purposes, I downloaded it in two different versions on my iPad, as an e-pub (which went direct to my iBooks library) and as a pdf. It's also possible to simply read the book on-line here.

At its most basic, A Small Dose of Toxicology remains a reader-friendly reference book. As my pdf version tells me, it's still 280 pages. It has 21 chapters (although I had to count them because in the e-version, they are not numbered in the table of contents). The book starts with an overview - "Toxicology and You" , followed by a brief history of poisons and their studies, followed by chapters that focus on a specific toxic substance or issue. The first three chapters do this through a lens of everyday consumption: alcohol, caffeine, nicotine. The book then explores such famously poisonous materials as arsenic, mercury and lead before moving onto subjects such as as endocrine disrupters and radiation exposure.

In other words , it contains many small doses of information about many toxic things. You can see exactly why a poison-obsessed writer like myself would go for the material. But the better thing about it is that it's not written for someone like me. Gilbert is aiming for a more general audience (he tells me he hopes to see it used in high school classrooms) and he succeeds in making this a solidly written, clear, and occasionally fascinating exploration of toxic chemistry.

Of course, it's hard to make poison too boring. Still, he has a nice technique of using everyday examples to create level-headed explanations, for instance in this section on calculating a toxic dose:

"There are approximately 100 mg of caffeine in a cup of coffee. The actual amount of caffeine depends on the coffee beans, how the coffee was prepared, and size of the cup. And adult weighing 155 pounds (about 70 kg) who consumes this cup of coffee would receive a dose of 100 mg divided by 70 kg or 1.4 mg/kg of caffeine. The importance of including body weight becomes clear if you consider a child who weighs 5 kg (about 11 pounds). If this child consumed the same amount of coffee, the dose would be 100 mg/5 kg or 20 mg/kg, more than ten times higher than the adults."

And he weaves such examples throughout his story, later calculating the half-life of a cup of coffee in the body (about four hours), later again looking at the effect of pregnancy on that half-life question: "During the last two trimesters of pregnancy, caffeine metabolism decreases, and the half-life increases to about twice normal, or 8-10 hours. This means that after caffeine consumption both the material blood levels and the infant's exposure will stay higher for a longer period of time."

These facts and examples are neatly ordered. Each chapter begins with a "quick facts" chart, followed by a history of the specific poison and its use in society (lead in pipes and paint, mercury in thermometers and so forth), followed by case studies - the recent discovery of lead in children's lunch boxes where it was used to stabilize the plastic - followed by information about health effects, ongoing research, and government regulations.

Occasionally, though, the author goes beyond textbook into advocacy: "We need to reduce the use of lead in a wide range of consumer products," Gilbert writes in the chapter about that heavy metal. These opinionated moments and his sense of story telling, lift the book beyond standard textbook. Although I suspect that also means that it won't appeal to readers from the anti-environmental movement.

But, you may ask, couldn't he present the advocacy and information just as neatly in a print format? And I've come to believe that he couldn't. Oh, the downloaded books have some of the usual glitches we find in these early days of e-book publishing. I complained earlier that the table of contents in the pdf version didn't provide page numbers for chapters. The iBook version I downloaded skipped the table of contents entirely (I could have tried again for a better result but I just flipped over to the pdf for the information).

But, but, the e-version does work in ways that would just not be possible in print - by which I mean that it offers a dazzling array of live links to additional information and resources. The introduction is followed by four pages of links to regulatory agencies and other organizations around the world that archive information on toxic materials. Further links stud the text and there are yet more at the end of each chapter. Not to mention links to graphics, powerpoints, interactive posters.

Gilbert is especially proud of his Milestones of Toxicology poster, which you can link to from the book or here from the website. The poster has now been translated into ten languages, mostly recently Arabic. A Chinese translation is in the works. He also likes the idea that as publisher of his own e-book, he can keep it updated. When I talked to him, he was already planning to add new research papers into the book and, in fact, planning a third edition that would make better use of his website and contain more hyperlinks to Toxipedia.

Yes, empire-building already out in the digital universe. But in a good cause. We really do need to know more about poison.

Deborah Blum is a Pulitzer-prize winning science writer and the author of five books, most recently the best-selling The Poisoner's Handbook: Murder and the Birth of Forensic Medicine in Jazz Age New York. She is a professor of journalism at the University of Wisconsin-Madison.